In the case of a solid sample, it is pressed into direct contact with the crystal.

This is particularly useful for solid samples, though can be difficult to create standards for leading the challenges in quantitative analysis.

It is also possible to record vibrational spectra of solid samples under high and varying pressure.

In general, no special preparation technique is required when solid samples are to be studied.

For instance, a chemist might be given an unknown solid sample.

Let us consider a given amount of solid sample in a controlled atmosphere.

This is especially important for solid samples where there is a strong matrix influence.

The net was bringing in solid samples of plankton.

A small mechanical impulse causes a solid sample to vibrate.

The final method is to use microtomy to cut a thin (20-100 m) film from a solid sample.